Oil-tank valve



' UNITED STATES PAT WILLIAM F. JAMES, OF HONOLUL'U, TERRITORY OF HAWAII.

OIL-TANK VALVE.

T 0 all whom t may concern:

Be it known that I, WILLIAM F. JAMEs, a citizen of the United States, and a resident of Honolulu, in `the Territory of Hawaii, have invented a new and Improved Oil- Tank Valve, of which the following is a full, clear, and exact description.

This invention relates to improvements in oil tank valves, an object of the invention being to provide an improved construction of double acting valve for use in tanks or reservoirs from which the fluid is re quired to be fed intermittently into afchamber or receptacle below in which the level is maintained constant by liquid seal action.

A further object is to provide an improved construction of parts in which a removable cap for the tank operates the valve which controls the outlet from the tank and so construct the parts as to prevent the simultaneous removal of the cap and the valve, but permit the independent opening of either so that the tank canbe refilled from time to time without danger, and the liquid can be discharged from the tank as occasion may require. 1

Heretofore, with tanks or reservoirs sup plying oil to stoves and the like, it has been necessary to remove the tanks from the stoves .and turn them up-side-down in order to refill said tanks. With my improved construction, the tank can be refilled without removal and'while in normal operative position.

A further object is to provide an improved construction'of tank and valve control therefor, which vmay be adapted for use in connection with water coolers or for any other analogous purpose.

With these and other objects in view the invention consists in certain novel features of construction, and combinations andar- `rangements of parts, as will be more fully hereinafter described and pointed out in the claims. Y

Inthe accompanying drawings- Figure l is a view in longitudinal section illustrating my invention. j

Fig.- 2 is a view insection through the tank at right angles to Fig. 1,v but showing the valve control vin elevation.v

Fig. 3 is an endview of the cup 4.v

Fig. 4 is an inverted vplan view of the @ap 18. Y

1 represents a supply tankwhich, we will for purposes efdesripuoa is i0 be Specification of Letters Patent.

Patented Nov. 22, 1921. 1920. Serial No. 383,005.

ycasing 2 and projects through the top of tank l and is secured in place by means of solder 3 or other securing means.

5 represents a tubular. outlet spout which has an enlarged upper end 6 screwed into the threaded lower end of the tubular casing 2, as shown at 7, and forming at its upper end a seat for a valve 8. The lower end of this tube or spout 5 is adapted to be projected into a compartment and maintain a level of liquid therein by being submerged, or partially submerged, in the liquid, as indicatcd .at 9 in F ig. Al.

The valve 8, above referred to, is secured to the lower end of a stem 10 which projects upwardly in the casing 2 and is provided withattenedsides l1 which are engaged by parallel pins 12, said pins projecting through the casing 2 and operating to hold the stem 10. against rotary movement, but permit longitudinal movement of the stem to open and close the valve. A collar 13 is located around the stem 10 against the pins 12 and a coiled spring 14 is positioned around the stem and located between the collar 13 and the valve 8, said spring tendingto hold the valve normally on its seat.

he eXtreme upper end of the stem 10 is screw threaded, as shown at 15, and these threads are engaged by internal screw threads 16 in a tubular shank 17 on a rotary cap 18. The cap 18 lits in thecup 4 and is provided ,with a gasket 19 secured to its lower faoeby means of a nut 2O screwed onto the shank 17 so that said cap 18 with its gasket 19 constitutesV a valve seating against the upper end of the casing 2 and the bottom of cup 4 to form an,- airtight closure for the tank 1.

To prevent possibility of the cap 18 and the valve 8 from being simultaneously removed from the casing 2, 4I* provide the upper endof the cup 4 with an annular flange 21 and provide inwardly projecting VAlugs 22 on the cap 18 which project under the fiange 21. Recesses 23 are provided in the flange 21 topermit the removal of the This tank 1 has secured therein a @a @ser a@ aber .ha been, wreed Slightly to free the shank 17 from engagement with the threads 15, but ordinarily the lugs 22 are under the flange 21 and while they per-- mit a free rotary turning of the cap, will prevent a longitudinal movement ofthe cap" while it is in threaded engagement with theV "annular series of openings 25 for the paslsa'e of liquid therethrough.

he operation is as follows: When it is i desired to' fill the tank 1, the cap 18 is removed leaving the valve 8 held in a closed josition by the action of the `spring, .14.

iquid can now be poured through the open upper end ofthe tubularcasing 2, and will flow throughthe openings 25 into the tank 1 but cannot flow out.

When it is desired to discharge liquid from tan'k'l through theoutlet tube 5, the cap 18 yon being replaced is turnedto the right, so that the internally screw threaded shank 17 by reason of its engagement with the threads 15 will cause the stem 10 to move upwardly, thus lifting the valve 8 from its seat and allowing the liquid in tank 1 to flow through the openings 24 and outlet tube 5, air enterln the tank by the same passages to take its p ace. This liow willrbe maillltainea unal the level @f the liquid4 in a lower reservoir, as indicated at 9, rises high enou' h to seal the end of the outlettube. It l be noticed that the gasket 19 in the cap 18 hermetically seals the upper opening in the tubular valve casi 2 before the lower valve 8 can open. e valve 8' is closedby the spring 14 when the cap 18 is turned to thel left in the direction opposite to that just described.

It will valso be non dalla it is impossible to lift the lower valve 8, and the upper cap valve 18 simultaneously, because when the cap valve 18. is turned to the' left to a position for removal, its'tllreads will be disconnectedv vfrom the threads'V ofthe stem, and hence the device is practically fool-proof, it'being impossible for'tlie `u'idin tank 1 to pour directly through the openings/i and tube 5 into the lower reservoir. or fot unless the ca 18 has been properly' screwed Y into place, t us closing tightly the upper valvev gasket 19 on its vseat,Yotherwseydisas- 4trous results mightv ensue well known in the art.

While I have described my invention'` as applied to fuel tanks for oil stoves, I would have' it understood that I desire to cover the device broadly vfor other fluids, and for any other use to whichI itc'an' be put; such for instance, as in water' coolexsof thetyp'e so comlnomwhereinj-the large bottle o" water container has' to be 'inverted AoverA lle Various slight changes might be made in the general form and arrangement of parts described Without departing Afrom the invention, andy hence, I do not limit myself to the precise details set forth, but consider myself at liberty to make such changes and alterations as fairly fall within the spirit and sccpe of the appended claims.

claim:

l. The combination with a tank, of a tllbular valve casing secured in the tank, an outlet valve at the lower portion ofthe tubular casing, a removable cap constituting a valve on the upper portion of the tubular casing, a stem on said-irst-mentioned valve having a screw threaded end, means holding the stem against rotary movement, and an internally screw threaded shank on the cap engagling the threadsof the stem.

' 2. he combination with a tank,1of a tubular valve casing secured in the tank, an outlet valve at thelower portion of the tubular casing, a removable cap constituting a valve on the yupper portion of the tubular casing, a stein on said first-mentioned valve having a screw threaded end, means holding the stem lllgailflst.Y rotary movement, an internally screw threaded shank Von the cap engaging thethreads of the stem, anda spring around the stein` normally holding the first-mentionedvalve .in closed position.

3.v Thel combination with a tank, of a tubular valve casing secured-in .the tank and havingopenings adjacent itsrespective ends, an outlet tube secured in the lower end of the casing and forming a valve seat,a valve at the lower end of the casing normally engagging. said seat, a stem on said valve having flattened sides, a pair of pins"` projected through the casingtand engagingl the flat sides of the stem holding the latter against rotary movement, a collararound the stem engaging the pins, a coiled spring around the stembetween 'the collar and the; valve holding1 the latternormally in closedposition,yand a removable cap operatively engaging the stem and adaptedto raise and lower the valve when said capl isftlarned.

`4. The combination with a tank, of a tubuv lar valwecasing secured in the tank and having openings adjacent its respective ends, an outlet tube secured in the lower end of the casing and forming-al valve seat, a4 valve at the lower end of the casing normally engaglng saidvr seat, a stem on said `valve having flattenedlsides, a pair of pins projected through the .casingand engaging: ther-Hat sdeslof. the stem holding the latteragainst rotaryvmovement, a collar around the stem engaging the, pins, acoile'd` springvaround the stem, betweenY the collarandvpthe' valve lloldlingjh'e latter lllormallyl in closedv posithreaded shank on the cap engaging the threads of the stem.

5. The combination with a tank, of a tubular valve casing secured in the tank and having openings adjacent its respective ends,

an outlet tube secured in the lower end of the casing and Jforming a valve seat, a valve at the lower end of the casing normally engaging said seat, a stem on said valve having flattened sides, a pair of pins projected through the casing and engaging the flat sides of the stem holding the latter against rotary movement, a collar around the stem engaging the pins, a coiled spring around the stem between the collar and the valve holding the latter normally in closed position, a cupV secured around the upper. end of the casing and projecting above the tank, a cap fitting said cup and constituting a valve therein, an internally screw threadedwtubular shank on the cap, and said stem having a screw threaded upper end engaging the threads of the shank.

6. The combination with a tank, of a tubular valve casing vsecured in the tank and having openings adjacent its respective ends, an outlet tube secured in the lower end of the casing and forming a valve seat, a valve at the lower end of the casing normally engaging said seat, a stem on said valve having flattened sides, a pair of pins projected through the casing and engaging the flat sides of the stem holding the latter against rotary movement, a collar around the stem engaging the pins, a coiled spring around the stem between the collar and the valve holding the latter normally in closed position, a cup secured around the upper end of the casing and projecting above the tank, a cap littingsaid cup and constitutingavalve therein, an internally screw threaded tubular shank on the cap, said stem having a screw threaded upper end engaging the threads of the shank, an outwardly projecting flange on the cup at its upper edge, inwardly projecting lugs on the cap normally located under the flange, and said flange having recesses therein for the passage of the lugs to permit removal of the cap.

WILLIAM F. JAMES. 

